Re: Print black only with HP printer

On Jan 21, 2:59 am, Arthur Entlich <e-printerh...@xxxxxxxx> wrote:
Just to add a bit about permanent or semi-permanent ink heads.

There are two basic designs in inkjet heads, thermal and piezo electric.

Thermal heads actually use heat the ink in each nozzle to around boiling
so that stream develops in the ink and that steam pushes a drop of ink
out of the end of the nozzle. These head designs vary from ones
integrated into the cartridge (made for one time use, although some
people successfully refill these cartridges numerous times before the
head fails) to more robust ones which are separate from the ink
cartridge and may last up to 10 or more ink cartridge installations.

Thermal heads of either type (one time or permanent) cannot tolerate
being activated for printing without ink in them for long or they will
get overheated and melt or otherwise become damaged (burn out).
Therefore they require ink flow to protect them from damage. As such,
in the case of a permanent head design, if the ink cartridge runs dry,
the printer shuts down to prevent the head from being damaged. Also,,
even if the head wasn't activated in a printing scenario, it may still
dry out and clog due to not having ink in the cartridge.

With the "one fill" heads integrated into the cartridge, the assumption
is you will be tossing it and replacing it so it doesn't matter if it
burns out or clogs from drying.

Piezo electric heads are different as, although they are usually
permanent, they do not heat up to any great extent, as the mechanism to
move the ink is mechanical using an electrical pulse to change the
dimensions of a small pump to cause it to expel ink out of a nozzle.

Although these heads can also dry out and clog, they are less likely to
get damaged from running without ink in them.

Art

If you are interested in issues surrounding e-waste,
I invite you to enter the discussion at my blog:

http://e-trashtalk.spaces.live.com/

Tony wrote:
WhiteTea <WhiteTea77...@xxxxxxxxx> wrote:
On Jan 20, 5:20 pm, Tony <tonythebengalti...@xxxxxxxxx> wrote:
WhiteTea <WhiteTea77...@xxxxxxxxx> wrote:
I have an HP photo printer and have been very pleased with it. I like
the ability to just change individual colors.
I think HP "accidentally" forgot to write in the program to just print
Black when that cartridge
has plenty of ink.
I have one cartridge that is out of color and it thinks that Magenta
is necessary to print black.:-)
Any workarounds ?
Thanks.
The answer depends on the type of ink delivery system your printer uses. What
model is it (or at least what are the cartridge numbers)?
Tony
MS MVP Printing Image
Printer is a D-7100 series using 02 series cartridges.

Thanks,

Printers that use the 02 cartridge have permanent print heads. If one of the
cartridges is empty the printer will not print because it is protecting the
print head from damage. You will need to replace any empty cartridges and then
all should be well.

Tony
MS MVP Printing Image

Tony,

I don't think you answered my question.

Since modern cartridges have all kinds of sensors, a sensor that can
turn off an empty cartridge
is quite doable. (I write 32-bit assembly programs for a hobby)

If fact my last printer had such a feature.

Take care,
Andy

.

Relevant Pages

  • Re: Print black only with HP printer
    ... The complete second paragraph I've written explains the mechanics of a thermal head and that those printers with "permanent" heads shut down if any ink color runs out to protect the head from burn out, ... I have one cartridge that is out of color and it thinks that Magenta ... How does any of that information answer the OPS question about magenta being needed to print black? ...
    (comp.periphs.printers)
  • Re: Print black only with HP printer
    ... I have one cartridge that is out of color and it thinks that Magenta ... There are two basic designs in inkjet heads, ... Thermal heads actually use heat the ink in each nozzle to around boiling ... require ink flow to protect them from damage. ...
    (comp.periphs.printers)
  • Re: Print black only with HP printer
    ... There are two basic designs in inkjet heads, ... Thermal heads actually use heat the ink in each nozzle to around boiling so that stream develops in the ink and that steam pushes a drop of ink out of the end of the nozzle. ... These head designs vary from ones integrated into the cartridge to more robust ones which are separate from the ink cartridge and may last up to 10 or more ink cartridge installations. ... Thermal heads of either type (one time or permanent) cannot tolerate being activated for printing without ink in them for long or they will get overheated and melt or otherwise become damaged. ...
    (comp.periphs.printers)
  • Re: a tube came off my ink thing
    ... I am saying neither the cartridge nor the head "knows" if it is getting ink or not. ... Rather that sensor is designed to determin eth temperature of the ink to estimate the viscosity of the ink, and it makes adjusting in the frequencies the heads use to be more responsive and accurate in dot position and size. ... It is possible you recieved a defective cartridge, chip or something else is wrong. ...
    (comp.periphs.printers)
  • Re: Epson R1800 tips anyone?
    ... let it sit for weeks without use or the heads will clog & don't pull the ink cartridges out & put them back in or it resets them as full & if it runs on an empty cartridge, ... I was suggesting just the test pattern to use a small amount of ink on every single color but it'll be hard for me to remember to do this regularly, I sure hope clogging is less of a problem, my C80 had banding problems from day 1, I even got them to replace the first one, with this one, I did have to run the cleaning cycle once to get the first print to come out clear. ... I have printed my own business cards & folded brochures in the past, that card stock is not much heavier than heavy duty gloss photo paper. ...
    (comp.periphs.printers)
Loading